var navRoot;
var lis;
//dynamic top navigation
initNav = function() {
	navRoot = document.getElementsByTagName("ul");
	for (var j = 0; j < navRoot.length; j++) {
		if (navRoot[j].className.indexOf('navigation') != -1)
		{
			nodes = navRoot[j].getElementsByTagName("li");
			for (var i=0; i<nodes.length; i++)
			{
				nodes[i].onmouseover = function()
				{
					this.className += " hover";
				}
				nodes[i].onmouseout = function()
				{
					this.className = this.className.replace("hover", "");
				}
			}
		}
	}
}
if (window.addEventListener)
	window.addEventListener("load", initNav, false);
else if (window.attachEvent)
	window.attachEvent("onload", initNav);